Log Message:
Update to 6.2:
"The main differences with previous releases are
(i) a completely new implementation of P-1 and P+1,
which enables stage 2 bounds B2 up to 10^17
(new algorithm from Montgomery and Kruppa);
(ii) a nice speedup in Stage 1 for ECM on Opteron
(configure with --enable-asm-redc)."